TOP265VG

Product Overview

Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: High efficiency, low standby power, wide input voltage range
Package: TO-220
Essence: Switching Power Supply Controller
Packaging/Quantity: Tube packaging, 50 units per tube

Specifications

Input Voltage Range: 85VAC to 265VAC
Output Power: Up to 100W
Frequency Range: 50Hz to 60Hz
Operating Temperature Range: -40°C to +150°C
Protection Features: Over-temperature, over-voltage, and over-current protection

Detailed Pin Configuration

VCC: Power supply for internal control circuitry
GND: Ground reference
FB: Feedback pin for output voltage regulation
COMP: Compensation pin for loop stability
DRAIN: High-voltage power MOSFET drain connection
SOURCE: High-voltage power MOSFET source connection
CS: Current sense pin for current limit protection
SENSE: Sense pin for primary-side regulation

Functional Features

Primary-side regulation for improved efficiency
Frequency jittering for reduced EMI emissions
Auto-restart protection for fault conditions
Built-in soft-start for controlled startup
Cycle-by-cycle current limit for over-current protection

Advantages and Disadvantages

Advantages: - High efficiency resulting in energy savings - Wide input voltage range for versatile applications - Compact TO-220 package for easy integration - Comprehensive protection features for enhanced reliability

Disadvantages: - Limited output power compared to higher-rated ICs - Requires external components for complete power supply design

Working Principles

The TOP265VG is a switching power supply controller that operates in a flyback topology. It utilizes primary-side regulation, where the output voltage is sensed directly from the primary side of the transformer. This eliminates the need for an optocoupler or secondary-side feedback circuitry, simplifying the design and reducing costs.

The controller generates a high-frequency PWM signal that drives the power MOSFET, controlling the energy transfer from the input to the output. The frequency jittering feature reduces electromagnetic interference (EMI) emissions, ensuring compliance with regulatory standards.

Detailed Application Field Plans

The TOP265VG is commonly used in various applications, including:

LED lighting systems
Consumer electronics
Industrial power supplies
Home appliances
Telecom equipment

Its wide input voltage range and high efficiency make it suitable for both AC-DC and DC-DC power conversion applications.

Detailed and Complete Alternative Models

TOP264VG: Similar specifications and features, but with lower output power capability.
TOP267VG: Higher output power capability, suitable for applications requiring more power.
TOP249RG: Primary-side regulated controller with additional features like line feedforward compensation.

These alternative models offer different power levels and additional functionalities, allowing designers to choose the most suitable option for their specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TOP265VG v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TOP265VG in technical solutions:

Q: What is TOP265VG? A: TOP265VG is a high-performance integrated switcher IC (integrated circuit) designed for offline power supplies.
Q: What are the key features of TOP265VG? A: The key features of TOP265VG include wide input voltage range, high efficiency, built-in protection features, and low standby power consumption.
Q: What is the typical application of TOP265VG? A: TOP265VG is commonly used in various applications such as LED lighting, consumer electronics, industrial power supplies, and home appliances.
Q: What is the maximum output power that TOP265VG can handle? A: TOP265VG can handle a maximum output power of up to 100 watts, depending on the specific design and operating conditions.
Q: Does TOP265VG support dimming functionality for LED lighting applications? A: Yes, TOP265VG supports dimming functionality through external control signals or by using PWM (Pulse Width Modulation) techniques.
Q: Is TOP265VG suitable for universal input voltage applications? A: Yes, TOP265VG is designed to work with a wide input voltage range, typically from 85VAC to 265VAC, making it suitable for universal input voltage applications.
Q: What are the protection features available in TOP265VG? A: TOP265VG includes built-in protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown protection.
Q: Can TOP265VG operate in a continuous conduction mode (CCM)? A: Yes, TOP265VG can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), depending on the specific design requirements.
Q: Does TOP265VG require an external heatsink for thermal management? A: The need for an external heatsink depends on the specific application and power dissipation requirements. In some cases, an external heatsink may be necessary.
Q: Are there any evaluation boards or reference designs available for TOP265VG? A: Yes, the manufacturer of TOP265VG provides evaluation boards and reference designs that can help engineers in designing and testing their applications.

Please note that the answers provided here are general and may vary based on specific product documentation and datasheets. It is always recommended to refer to the official documentation for accurate and up-to-date information.